Mold for building-blocks.



H. A. ULLRIGH.

MOLD FOR BUILDING BLOCKS.

APPLICATION FILED FEB. 25, 1909 1,070,859, I Patented Aug. 19, 1913.

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1,070,859, Patented Aug. 19, 1913.

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MOLD FOR BUILDINGBLOGKS.

APPLICATION FILED FEB. 25, 1909.

1,070,859, v Patented Aug. 19, 1913.

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:0 Eric HOWARD A. ULLR-IGI-I, OF CHICAGO, ILLINOIS.

MOLD FOR BUILDING-BLOCKS.

T 0 all 'w/wm it may concern Be it known that I, HOWARD A. ULLRICH, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Molds for Building- Blocks, of which the following is a complete specification.

This invention relates to improvements in molds for building blocks and more particularly to a collapsible mold adapted to form blocks simulating courses of bricks with tuck pointing on one or more faces of the block in the joints between said courses.

The main object of the invention is to provide a collapsible mold adapted to form building blocks which simulate fragmentary courses of bricks, the courses of each block being adapted to overlap those of adjacent blocks in the same course.

It is a further object of the invention to provide a mold having ledge cores therein adapted to form ledges on the blocks, corresponding to the ends of the various fragmentary courses, and which are adapted to be folded outwardly from the body of the mold when it is desired to remove the block, or which may be quickly removed from the mold when it is desired to form full sized blocks with one or more square ends.

A still further object of the invention is to provide a mold adapted to form in one or more sides of the block a plurality of lines of tuck pointing of a color different from that of the body of the block.

A specific construction embodying this invention is illustrated in the accompanying drawings, in which:

Figure 1 is a fragmentary, longitudinal, central section of a device embodying this invention and showing the tuck point forming means in dotted lines. Fig. 2 is a bottom plan view of the same, with the bottom and air space core removed, and showing one side and one end with its ledge core in open position. Fig. 3 is an end elevation of the mold. Fig. 4 is a fragmentary, longitudinal section of the mold in position for the completed block to be removed. Fig. 5 is a transverse section of the mold taken on line AA of Fig. 1. Fig. 6 is a View of the mold with the top removed and having the tuck pointing core inserted. Fig. 7 is an enlarged, fragmentary section of one side Specification of Letters Patent.

Application filed. February 25, 1909.

Patented Aug. 19,1913. Serial No. 479,993.

of the mold showing the tuck pointing core in place and filled with concrete. Fig. 8 is a similar section with the tuck pointing core removed. Fig. 9 is a fragmentary section of the block having the tuck pointing therein. Fig. 10 is a fragmentary section of the block showing a different form of tuck pointing. Fig. 11 is a section taken on line 13-13 of Fig. 6. Fig. 12 is a section taken on line CC of Fig. 6. Fig. 13 is a transverse section of a modified form of side wall having joint grooves therein, and the tuck pointing core in place. Fig. 14 is a transverse section of the mold with a partition therein for forming half length blocks. Fig. 15 is a fragmentary plan view of the casing and partition.

In the construction shown in the drawings, the body or casing of the mold comprises a top 1, a bottom 2, side walls 3 and 4, and end walls 5, all of which may be of any preferred material, and may be secured together in any preferred manner to permit their removal from about the block. As shown, however, the end walls 5 are provided adjacent each margin with apertured ears or lugs 6 in which are pivoted arms 7 adapted to seat in notches 8 in the ends of said top and bottom and side walls. Pivoted on the end of each arm is a cam lever 9, adapted when in looking position, as shown in Figs. 1 and 2, to bind said members firmly against the adjacent edges of the end Walls.

The end walls 5, as shown, are hinged to the side walls at their tops by means permitting any of said Walls to be turned away from the block independently of or simultaneously with the others. For this purpose a shaft 10 is set into the upper edge of each end wall 5 and is rotatively secured thereto by means of staples 11, or the like. Said shaft extends to the outer side of each side wall and is hinged thereto by means of a hinge 12, as shown more clearly in Figs. 3, 5 and 6. By means of this construction the end walls may be turned outwardly on the shafts 10, as shown in Figs. 2 and 4, and the side walls may be turned outwardly on the hinges 12, as shown in Fig. 2.

For the purpose of providing a block having a plurality of ledges arranged at intervals from the ends thereof, ledge cores 13 are placed in the casing and are provided shown at the left hand of Fig. 2.

The bottom 2 of the casing is provided with a central longitudinal aperture and the ledge cores are provided with a slot or fork 17 at their inner ends which registers with said aperture, and extending through said aperture and forks to the top of the casing is the air space core 18, which comprises two core sections or parts spaced a distance apart and at a distance from the side and 1 end. walls, and are connected together at their bottoms, as shown more clearly in Fig. (3. Said sections taper from their bottoms upwardly on all sides to facilitate their removal. from the mold after the mold has been filled with concrete. Between said core section is the raised connecting rib 19 adapted to provide a channel in the block which connects the air spaces formed by said sections. Countersunk in the tops of the ledge cores and air space core, and extending longitudinally of the casing, is a channel core 20, which comprises a strip of suitable material having its ends resting in suitable recesses 21 in said ledge cores, and which is adapted to form air channels in the block extending from the ends thereof to the air spaces formed by said core 18, and also in the partition 22 formed in the block 23 between said air spaces.

In order to provide a block having one or more faces which resemble courses of brick with joints therebetween, one or more of the walls, as herein shown the side Wall 3, is provided on its inner face with beads 2 and 25 which respectively extend longitudinally and transversely thereof, and the ledge cores 13 are provided in their adjacentiaces with grooves 26 adapted to receive said beads so that the wall may fit closely to said cores. Said beads will form grooves 27 in the side of the block which simulate joints between courses of brick and if it is desired to tuck point said joints a tuck point core 28 is inserted into the casing with the rear side thereof abutting against the ledge cores 13, as shown in Figs. 6 and 11. Said tuck point core comprises a front bar 29 adapted to abut against the tops of the ledge cores, and tapered strips 30 attached thereto and extending both longitudinally and transversely of the side 3 and connected together, and are adapted to rest upon and coincide with the beads 24 and 25, as shown in Figs. 11 and 12.

If it is desired to provide a block with raised joint lines, as shown in Fig. 10, the side wall 3 is provided with grooves 31-32 in place of the beads 2e-25 of the wall 3, and the tuck point core rests over said grooves.

In order to hold the air channel core 20 in position when the tuck pointing is being placed, and when the material is being tamped under said core, a hasp 33 is piv oted in a seat 3% in the top of each ledge core 3, and is adapted to engage over the ends of said core, as shown in Fig. 6. ll ion the mold is filled and it is desired to place the cover 1 thereon said hasps may be swung outwardly in said plate and the top will hold the core in place.

The operation of the construction shown is as follows: The side and end walls are placed on. the bottom in upright positions, and are locked thereto by means of the cam levers 9. In this position the ledge cores 13 rest on the bottom 2 and the air space core 18 is placed in position between the ledge cores, and the air channel core is secured in place. The mold is then turned down on its side 3, and the tuck point core is inserted above and rests upon the beads 241 and 25, or grooves 31 and 32, as the case may be.

Concrete 35 is then placed in the mold and the tuck point core filled flush with the top thereof. When the concrete has set sutiiciently to retain its form, the tuck point core is removed, leaving recesses 36, as shown in Fig. 8, which may then be filled with concrete 37 of a diherent color, as shown in Fig. 9. The raised joint lines 38, shown in Fig. 10, are formed in asimilar manner except that the side of the mold is provided with grooves instead of beads. When the tuck pointing has become sulliciently set, the mold is turned again to an upright position, and filled with concrete. The hasps 33 are then turned back from the air channel core 20 and the top 1 secured in place. lVhen the concrete has become sutliciently set to remove the mold, the mold is turned bottom side up and the bottom is released and together with the air space core is removed, and the side and end walls are released and turned outwardly on their hinges. The end walls carry the ledge cores therewith, as shown in Figs. 2 and at, thereby leaving the block tree to be lifted from oil: the top 1 on which it rests. If it is desired to make full length blocks with one square end, one ledge core is removed.

If desired to make half blocks with square ends, a partition 39 of sheet metal is placed transversely across the center of the casing, and is held in place at its bottom by means of dowels 10 extending into sockets in the bottom 2, and the top is provided with flat ears 11 which rest on the top of the side walls and are secured. thereto by means of screws or the like, and the air channel core 20 is constructed in two sections which terminate at a short distance from said partition, as shown in Fig. 15.

Obviously a mold constructed in accordance with this invention is adapted to be quickly set up or knocked down, and to provide blocks having a surface which simulates courses of bricks, and obviously also many details of form and construction may be varied without departing from the principles of this invention.

I claim as my invention:

1. A mold comprising walls, means for locking said walls together, hinges connecting part of said Walls and adapting them to turn outwardly, ledge cores adapted to form ledges on the material molded, and means on one of said walls adapted to form grooves in the material molded in alinement with the planes of said ledges.

2. A mold comprising walls, means for locking said walls in position, compound hinges connecting the end walls with the side walls, and adapting them to be simultaneously opened, ledge cores removably secured on said end walls, means on part of said walls adapted to form grooves in the material molded, and an air space core intermediate the ledge cores.

3. A mold for plastic material comprising a casing, longitudinal and transverse beads on the inner side thereof, and a removable frame adapted to rest upon and coincide with said beads.

4:. A mold for building blocks comprising a casing, a plurality of longitudinally and transversely arranged strips secured together and carried in said casing in close contact with one side thereof, and ledge cores in said casing having faces in alinement with said longitudinal and transverse strips.

5. A mold for plastic material comprising a casing having removable walls, means on one of said walls adapted to form joint lines on one face of the material molded, and strips connected at right angles and adapted to seat over and coincide with said means.

6. A mold for building blocks comprising a casing having removable walls, ledge cores supported on the end walls and having ledges thereon, means on the side wall adapted to form joint lines on the material molded coinciding with the planes of said ledges, and a tuck point core adapted to lay over and coincide with said means.

7. A mold comprising a casing having knock down walls, ledge cores supported on part of said Walls and having grooves in one side thereof extending in the planes of the ledges, a plurality of beads on the wall of the casing adapted to seat in the grooves in said cores where said wall overlaps said cores, and a frame comprising longitudinal and transverse members adapted to rest upon said beads between said cores.

In testimony whereof I have hereunto subscribed my name in the presence of two witnesses.

HOWARD A. ULLRICH.

Witnesses:

W. W. WITHENBURY, E. R. WALKER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). C. 

